From 8abc5a7ce6e6a5b77f0ec82c91107a978b32f6e3 Mon Sep 17 00:00:00 2001 From: Wen Yang Date: Tue, 5 Mar 2019 19:33:53 +0800 Subject: [PATCH] ARM: bcm: fix a leaked reference by adding missing of_node_put The call to of_get_next_child returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./arch/arm/mach-bcm/board_bcm281xx.c:43:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 35, but without a corresponding object release within this function. ./arch/arm/mach-bcm/platsmp-brcmstb.c:337:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 329, but without a corresponding object release within this function. ./arch/arm/mach-bcm/platsmp-brcmstb.c:341:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 329, but without a corresponding object release within this functio ./arch/arm/mach-bcm/bcm63xx_smp.c:150:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 130, but without a corresponding object release within this function. Signed-off-by: Wen Yang Reviewed-by: Florian Fainelli Cc: Florian Fainelli Cc: Ray Jui Cc: Scott Branden Cc: bcm-kernel-feedback-list@broadcom.com Cc: Russell King Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: Brian Norris Cc: Gregory Fong Acked-by: Ray Jui Signed-off-by: Florian Fainelli --- arch/arm/mach-bcm/bcm63xx_smp.c | 1 + arch/arm/mach-bcm/board_bcm281xx.c | 1 + arch/arm/mach-bcm/platsmp-brcmstb.c | 7 +++++-- 3 files changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-bcm/bcm63xx_smp.c b/arch/arm/mach-bcm/bcm63xx_smp.c index f5fb10b4376f..1cb4ce812a84 100644 --- a/arch/arm/mach-bcm/bcm63xx_smp.c +++ b/arch/arm/mach-bcm/bcm63xx_smp.c @@ -142,6 +142,7 @@ static int bcm63138_smp_boot_secondary(unsigned int cpu, * return */ ret = bcm63xx_pmb_power_on_cpu(dn); + of_node_put(dn); if (ret) goto out; out: diff --git a/arch/arm/mach-bcm/board_bcm281xx.c b/arch/arm/mach-bcm/board_bcm281xx.c index b81bb386951d..1238ac801530 100644 --- a/arch/arm/mach-bcm/board_bcm281xx.c +++ b/arch/arm/mach-bcm/board_bcm281xx.c @@ -38,6 +38,7 @@ static void bcm281xx_restart(enum reboot_mode mode, const char *cmd) return; } base = of_iomap(np_wdog, 0); + of_node_put(np_wdog); if (!base) { pr_emerg("Couldn't map brcm,kona-wdt\n"); return; diff --git a/arch/arm/mach-bcm/platsmp-brcmstb.c b/arch/arm/mach-bcm/platsmp-brcmstb.c index 12379960e982..4555f21e7077 100644 --- a/arch/arm/mach-bcm/platsmp-brcmstb.c +++ b/arch/arm/mach-bcm/platsmp-brcmstb.c @@ -334,11 +334,14 @@ static void __init brcmstb_cpu_ctrl_setup(unsigned int max_cpus) rc = setup_hifcpubiuctrl_regs(np); if (rc) - return; + goto out_put_node; rc = setup_hifcont_regs(np); if (rc) - return; + goto out_put_node; + +out_put_node: + of_node_put(np); } static int brcmstb_boot_secondary(unsigned int cpu, struct task_struct *idle)